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y^2 -2y = 2x-5
y^2-2y+1 = 2x-5+1
(y-1)(y-1) = 2x-4
(y-1)^2 = 2(x-2)
a. puncak (a,b) ==>(2,1)
b. fokus F(a+p,b)
4p=2
p = 1/2
(2+1/2 , 1) ==> (5/2,1)
c. direktris x=a-p
=2-1/2 = 3/2
diteliti lagi yah